Asymptotic analysis for low-resolution massive MIMO systems with MMSE receiver
Asymptotic analysis for low-resolution massive MIMO systems with MMSE receiver
复制标题
DOI：
10.1109/cc.2018.8456462
复制
发表时间：
2018-01
影响因子：
4.1
通讯作者：
Kai Liu;C. Tao;Liu Liu-Liu;Yinsheng Liu
中科院分区：
文献类型：
--
作者：
Kai Liu;C. Tao;Liu Liu-Liu;Yinsheng Liu
本文研究了大规模多输入多输出 (MIMO) 系统的上行链路可实现速率，其中假设低分辨率模数转换器 (ADC) 配备在基站 (BS) 上。我们假设 BS 只知道不完善的信道站信息。然后设计了一种新的MMSE接收器，不仅考虑了高斯噪声，还考虑了信道估计误差和量化器噪声。通过使用随机矩阵的 Stieltjes 变换，我们进一步推导了所提出的 MMSE 接收器的上行链路可实现速率的紧渐近等价。我们通过表达可达到的速率对基站天线的数量进行了详细分析，并使用数值模拟验证了结果。它还表明，我们可以通过增加基站天线的数量来补偿由于低分辨率量化而造成的性能损失。
The uplink achievable rate of massive multiple-input-multiple-output (MIMO) systems, where the low-resolution analog-to-digital converters (ADCs) are assumed to equip at the base station (BS), is investigated in this paper. We assume that only imperfect channel station information is known at the BS. Then a new MMSE receiver is designed by taking not only the Gaussian noise, but also the channel estimation error and quantizer noise into account. By using the Stieltjes transform of random matrix, we further derive a tight asymptotic equivalent for the uplink achievable rate with proposed MMSE receiver. We present a detailed analysis for the number of BS antennas through the expression of the achievable rates and validate the results using numerical simulations. It is also shown that we can compensate the performance loss due to the low-resolution quantization by increasing the number of antennas at the BS.